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Has anybody done any headlight adjustments using the spirit levels within the headlights?

Attached are the drawings from Lexus Tech Doc and it would appear to get to those spirit levels an 8 mm plastic bolt must be removed found at the top of the headlights. I tried to release the bolt but it is seized. Is the bolt just holding a plastic lid to stop water getting into the lights?

I do not want to cause any damage due to lack of knowledge of what is below or what the bolt is holding together.

The height sensors on the front and rear are ok and functioning.

Any help would be greatly appreciated.

Chris.

 

 

Scan0006.jpg

Scan0007.jpg

Scan0008.jpg

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is there any chance you could rotate the images to make them easy to read

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In all Gs I had, I made headlight adjustments just rotating screws with a Phillips LONG screwdriver, in some way difficult to find, I don't  remember any bolt to remove...

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Thank you very muchfor your response. I will resubmit the pages tomorrow facing the right way.

Chris.

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Attached here are the same documents as before with the right orientation.

I had another go today to access the bubble gauges but without success. On the previous model they are visible exactly where they are shown on the repair manual. I cannot understand why they are shown to exist but in reality there is no way to access them. The 8 mm plastic bolt seems to be an integral part of the plastic housing of the headlights.

Any suggestions will be appreciated.

Chris

Scan0001.pdf Scan0002.pdf Scan0003.pdf

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i dont think the spirit levels are on the gs450 its the long screwdriver im afraid

 

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I have seen photos of the buble gauges on the GWS 190 models. I removed both level sensors and checked them. Both were in order. Then I tested the servo motors of the head lights and they were in order too. 

Then I set up a diagram to test the alighnment  of the headlights at a distance of 10 metres from the car. To my surpise they were spot on. Today I had the headlights checked at my MOT garage and I could see they were exactly spot on. Seeing is believing !

The only conclusion I can draw is that the ecu controlling the headlight operation was reset due to the disconnection of the Battery prior to disconnecting and removing the level sensors. Disconnecting the Battery was deemed necessary to avoid air bag deployment.

Concluding, I would like to thank you all for your help, response, comments and suggestions.

Kindest regards, 

Chris.

 

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